﻿<!DOCTYPE html>
<html>
<head>
  <title>Local Storage Commands</title>
  <!-- Copyright 1998-2021 by Northwoods Software Corporation. -->
  <meta name="description" content="TypeScript: The LocalStorageCommandHandler extension enhances the copy and paste commands to use 'localStorage' as the storage mechanism." />
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <script src="../assets/js/goSamples.js"></script> <!-- this is only for the GoJS Samples framework -->
</head>

<body>
  <div id="sample">
  <span style="display: inline-block; vertical-align: top;">
    <div id="myDiagramDiv" style="border: solid 1px black; width:300px; height:300px"></div>
  </span>
  <span style="display: inline-block; vertical-align: top;">
    <div id="myDiagramDiv2" style="border: solid 1px black; width:300px; height:300px"></div>
  </span>
  <p>
    This example demonstrates a custom <a>CommandHandler</a>.
    It uses localStorage as the repository for the clipboard, rather than an in-memory global variable.
    It is defined in its own file, as <a href="LocalStorageCommandHandler.ts">LocalStorageCommandHandler.ts</a>.
  </p>
  <p>
    Try copying and pasting between the above Diagrams, or between tabs/windows that contain Diagrams using LocalStorageCommandHandler.
    Note that when copying and pasting between Diagrams, it will work best if they have similar templates.
  </p>
  </div>

  <script type="module" id="code">
    import * as go from "../release/go-module.js";
    import { LocalStorageCommandHandler } from './LocalStorageCommandHandler.js';

    if (window.goSamples) window.goSamples(); // init for these samples -- you don't need to call this
    const $ = go.GraphObject.make; // for conciseness in defining templates

    const myDiagram = $(go.Diagram, 'myDiagramDiv', // create a Diagram for the DIV HTML element
    {
        commandHandler: new LocalStorageCommandHandler(),
        'undoManager.isEnabled': true // enable undo & redo
    });
    const myDiagram2 = $(go.Diagram, 'myDiagramDiv2', // create a Diagram for the DIV HTML element
    {
        commandHandler: new LocalStorageCommandHandler(),
        'undoManager.isEnabled': true // enable undo & redo
    });
    // define a simple Node template
    myDiagram.nodeTemplate =
        $(go.Node, 'Auto', // the Shape will go around the TextBlock
        $(go.Shape, 'RoundedRectangle', { strokeWidth: 0 },
        // Shape.fill is bound to Node.data.color
        new go.Binding('fill', 'color')), $(go.TextBlock, { margin: 8 }, // some room around the text
        // TextBlock.text is bound to Node.data.key
        new go.Binding('text', 'key')));
    myDiagram2.nodeTemplate = myDiagram.nodeTemplate;
    // create the model data that will be represented by Nodes and Links
    myDiagram.model = new go.GraphLinksModel([
        { key: 'Alpha', color: 'lightblue' },
        { key: 'Beta', color: 'orange' },
        { key: 'Gamma', color: 'lightgreen' },
        { key: 'Delta', color: 'pink' }
    ], [
        { from: 'Alpha', to: 'Beta' },
        { from: 'Alpha', to: 'Gamma' },
        { from: 'Beta', to: 'Beta' },
        { from: 'Gamma', to: 'Delta' },
        { from: 'Delta', to: 'Alpha' }
    ]);
    myDiagram2.model = new go.GraphLinksModel([
        { key: 'Alpha', color: 'lightblue' },
        { key: 'Beta', color: 'orange' },
        { key: 'Gamma', color: 'lightgreen' },
        { key: 'Delta', color: 'pink' }
    ], [
        { from: 'Alpha', to: 'Beta' },
        { from: 'Alpha', to: 'Gamma' },
        { from: 'Beta', to: 'Beta' },
        { from: 'Gamma', to: 'Delta' },
        { from: 'Delta', to: 'Alpha' }
    ]);

    window.myDiagram = myDiagram; // Attach to the window for console debugging
    window.myDiagram2 = myDiagram2;
  </script>
</body>
</html>